Department of Defense
INSTRUCTION
NUMBER 4650.10
July 28, 2015
Incorporating Change 1, Effective April 13, 2016
CIO DoD
SUBJECT: Land Mobile Radio (LMR) Interoperability and Standardization
References: See Enclosure 1
1. PURPOSE. In accordance with the authority in DoD Directive (DoDD) 5144.02 (Reference
(a)) and guidance in DoDD 3025.18 (Reference (b)), DoD Instruction (DoDI) 8330.01
(Reference (c), and DoDI 5535.10 (Reference (d)), this instruction:
a. Establishes policy and assigns responsibilities to ensure that LMR systems support
interoperable and secure communications with other federal, State, local, and tribal LMR users.
b. Directs the establishment of a list of DoD-required Telecommunications Industry
Association (TIA) International Project 25 (P25) interfaces (referred to in this instruction as
“DoD P25 interfaces”) to support LMR interoperability.
2. APPLICABILITY. This instruction:
a. Applies to OSD, the Military Departments (including the Coast Guard at all times,
including when it is a Service in the Department of Homeland Security by agreement with that
Department), the Office of the Chairman of the Joint Chiefs of Staff (CJCS) and the Joint Staff,
the Combatant Commands (CCMDs), the Office of the Inspector General of the Department of
Defense, the Defense Agencies, the DoD Field Activities, and all other organizational entities
within the DoD (referred to collectively in this instruction as the “DoD Components”).
b. Applies to all DoD operations, activities, and installations worldwide.
c. Will not alter or supersede the existing authorities, policies, and legal requirements of the
National Guard Bureau, pursuant to Title 32, United States Code (U.S.C.) (Reference (e)), Title
10, U.S.C. (Reference (f)), and DoDD 5105.83 (Reference (g)).
3. POLICY. It is DoD policy that:
